阅读说明：本技术 一种均匀分布内部炉料的烧结竖式冷却炉 (Sintering vertical cooling furnace with uniformly distributed internal furnace burden ) 是由 闫磊 陆娟 王文 于 2020-06-04 设计创作，主要内容包括：本发明属于烧结显热余热回收技术领域,进一步是一种均匀分布内部炉料的烧结竖式冷却炉。本发明的冷却炉内部的顶部设有顶部料仓,顶部料仓的中间位置安装有分料器,顶部料仓底部安装有多个布料器,布料器四周均匀设置有多个出料口,顶部料仓的出料口外侧安装有立板,布料器上部喉管的垂直管段安装有整流板,出料口为排料管和矩形流管组成的管体,排料管内侧安装有导流板,矩形流管的底板设有开槽,出料口的下底部通过弹簧安装有导料舌板。本发明通过多个装置使烧结矿内部炉料分布均匀,解决了烧结矿内部炉料分布不均匀和烧结矿内部循环空气分布不均匀,使得循环冷却空气分布均匀,竖冷炉回收系统正常生产。(The invention belongs to the technical field of sintering sensible heat waste heat recovery, and further relates to a sintering vertical cooling furnace with uniformly distributed internal furnace charges. The top of the interior of the cooling furnace is provided with a top bin, a distributor is arranged in the middle of the top bin, a plurality of distributing devices are arranged at the bottom of the top bin, a plurality of discharge ports are uniformly arranged on the periphery of each distributing device, vertical plates are arranged on the outer sides of the discharge ports of the top bin, a rectifying plate is arranged on a vertical pipe section of a throat pipe on the upper portion of each distributing device, each discharge port is a pipe body consisting of a discharge pipe and a rectangular flow pipe, a guide plate is arranged on the inner side of each discharge pipe, a groove is formed in the bottom plate of each rectangular flow pipe, and a material guide tongue plate is arranged on the lower bottom of each discharge port through a spring. The invention enables the burden inside the sinter to be uniformly distributed through a plurality of devices, solves the problems of nonuniform burden distribution inside the sinter and nonuniform circulating air distribution inside the sinter, enables the circulating cooling air to be uniformly distributed, and enables the recovery system of the vertical cooling furnace to normally produce.)

1. A sintering vertical cooling furnace with uniformly distributed internal furnace materials is characterized in that a distributor is installed in the middle of the top bin, a plurality of distributors are installed at the bottom of the top bin, a plurality of discharge ports are uniformly formed in the periphery of each distributor, vertical plates are installed on the outer sides of the discharge ports of the top bin, a rectifying plate is installed on a vertical pipe section of a throat pipe on the upper portion of each distributor, each discharge port is a pipe body formed by a discharge pipe and a rectangular flow pipe, a guide plate is installed on the inner side of each discharge pipe, a groove is formed in the bottom plate of each rectangular flow pipe, a guide tongue plate is installed on the lower bottom of each discharge port through a spring, through retaining walls are installed at corners of a hearth of the cooling furnace in the height direction, and through retaining walls are arranged at the intersection points of air distribution beams around the cooling furnace in the height direction, the retaining wall with the cavity that the brickwork of cooling furnace formed is filled up through fine powder, the slope has the spoiler upwards to weld all around of brickwork.

2. The vertical sintering cooling furnace with uniformly distributed internal charge according to claim 1, characterized in that: the rectifying plate is welded on the throat part of the outer side of the distributing device in an inclined and upward manner.

3. The vertical sintering cooling furnace with uniformly distributed internal charge according to claim 1, characterized in that: the distributor is a trapezoidal narrow steel plate.

4. The vertical sintering cooling furnace with uniformly distributed internal charge according to claim 1, characterized in that: the spoilers are steel plates and are distributed all around the hearth.

Technical Field

The invention belongs to the technical field of sintering sensible heat waste heat recovery, and further relates to a sintering vertical cooling furnace with uniformly distributed internal furnace charges.

Background

The traditional sintering machine adopts a mode of cooling hot sinter by a circular cooler. However, the problems existing in the traditional annular cooling operation process of the sinter are summarized, and the following four problems are found to be more prominent: blast capacity of ore reaches 2200Nm³The cooling power consumption of the sinter is high; no-tissue and tissue dust emission and serious pollution; the sealing is poor, and the air leakage rate reaches 20-30%; fourthly, cross flow heat exchange is insufficient, air quantity is wasted, waste heat quality is low, and waste heat utilization efficiency is low by about 30%.

The design of the vertical cooling furnace requires that the ore discharging temperature is less than or equal to 150 ℃, and the material conveying belt is damaged by overhigh ore discharging temperature. The temperature of the waste gas entering the waste heat boiler is set to be 450 ℃, and the lowest temperature in operation is not lower than 320 ℃. The following technical problems are found in the 3# sintering vertical cooling furnace during the debugging of the thermal load: at the beginning of the design, inside the direct whole vertical cooling furnace that adds of vertical cooling furnace top material loading dolly is followed to the sinter, causes the inside sinter of vertical cooling furnace to distribute inhomogeneously, presents in the middle many, and both sides are few, and the bold sinter rolls the vertical cooling furnace edge easily when the whereabouts, causes following two aspects outstanding problem:

one is as follows: the burden distribution in the sinter is uneven, the middle is more, the periphery is less, the granularity of the middle material is smaller, and the granularity of the peripheral material is larger. The contact surface between the sintered ore and the circulating cooling air is reduced, the ore discharge temperature is high and reaches 190 ℃ on average, and the ore discharge temperature is higher than the design value and is lower than 150 ℃;

the second step is as follows: the distribution of circulating air in the sintered ore is uneven, so that air quantity segregation is caused, the ore discharge temperature of the sintered ore is high, and the temperature of the circulating air is low. Outlet exhaust gas temperature 270-. The waste gas at the outlet of the vertical cooling furnace does not reach the design setting of 450 ℃, and the lowest temperature in operation is not lower than the requirement of 320 ℃.

Disclosure of Invention

In order to solve the above problems, an object of the present invention is to provide a cooling furnace capable of uniformly distributing a charge material efficiently and conveniently.

In order to achieve the purpose, the invention provides the following technical scheme: a sintering vertical cooling furnace with uniformly distributed internal furnace materials is characterized in that a top bin is arranged at the top inside the cooling furnace, a distributor is installed at the middle position of the top bin, a plurality of distributors are installed at the bottom of the top bin, a plurality of discharge ports are uniformly formed in the periphery of each distributor, a vertical plate is installed on the outer side of each discharge port of the top bin, a rectifying plate is installed on a vertical pipe section of a throat pipe on the upper portion of each distributor, each discharge port is a pipe body formed by a discharge pipe and a rectangular flow pipe, a guide plate is installed on the inner side of each discharge pipe, a groove is formed in a bottom plate of each rectangular flow pipe, a guide tongue plate is installed at the lower bottom of each discharge port through a spring, through-length blocking walls are installed at the corner of a hearth of the cooling furnace in the height direction, through-length blocking walls are arranged at the intersection of air distribution beams around the cooling furnace in the height direction, and cavities formed by the blocking walls and the furnace walls of the cooling furnace are filled with fine powder materials, spoilers are welded on the periphery of the furnace wall in an inclined and upward mode.

The scheme is further improved in that: the rectifying plate is welded on the throat part of the outer side of the distributing device in an inclined and upward manner.

The scheme is further improved in that: the distributor is a trapezoidal narrow steel plate.

The scheme is further improved in that: the spoilers are steel plates and are distributed all around the hearth.

The invention has the beneficial effects that: the invention enables the burden inside the sinter to be uniformly distributed through a plurality of devices, solves the problems of nonuniform burden distribution inside the sinter and nonuniform circulating air distribution inside the sinter, enables the circulating cooling air to be uniformly distributed, and enables the recovery system of the vertical cooling furnace to normally produce.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural view of a dispenser according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a distributor according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a rectifying plate according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of a rectangular flow tube base plate of an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a discharge port according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a retaining wall according to an embodiment of the invention;

the examples in the figure are:

the device comprises a distributor 1, a top bin 2, a vertical plate 3, a distributor 4, a rectifying plate 5, a discharge hole 6, a guide plate 7, a groove 8, a guide tongue plate 9, a spring 10, a material blocking wall 11 and a spoiler 12.

Detailed Description

Examples

As shown in fig. 1-7, a sintering vertical cooling furnace of inside furnace charge of evenly distributed, the inside top of cooling furnace is equipped with top feed bin 2, tripper 1 is installed to the intermediate position of top feed bin 2, tripper 1 is trapezoidal narrow steel sheet, a plurality of distributing devices 4 are installed to 2 bottoms of top feed bin, distributing devices 4 evenly are provided with a plurality of discharge gates 6 all around, riser 3 is installed in 6 outsides of discharge gate of top feed bin 2, cowling panel 5 is installed to the vertical pipe section of 4 upper portion throats of distributing devices, cowling panel 5 inclines upward to weld in the outside throat of distributing devices 4.

The fairing 5 is a steel plate and has a vertical inclination angle 30 with the distributing device 4⁰~60⁰Preferably 40⁰~50⁰(ii) a And is welded on the outer side of the side throat part of the distributing device 4 obliquely upwards. The fine sinter powder accumulated on one side in the process of flowing obliquely to the throat is forcibly blocked and conveyed to the vicinity of the center of the vertical pipe by adding the rectifying plate 5. So that the fine powder and the coarse ore of the sinter are further disturbed and uniformly mixed when the sinter is distributed in the distributing device 4.

The discharge gate 6 is arranged the body that material pipe and rectangular flow tube are constituteed, arrange the material pipe inboard and install guide plate 7, the bottom plate of rectangular flow tube is equipped with fluting 8, the lower bottom of discharge gate 6 installs guide tongue plate 9 through spring 10, the bight department of the furnace of cooling furnace installs through long fender wall 11 along the direction of height, the crossing department of the wind distribution beam all around of cooling furnace sets up through long fender wall 11 along the direction of height, the cavity that the fender wall formed with the furnace wall of cooling furnace fills up through fine powder, the slope of furnace wall has spoiler 12 upwards welded all around, spoiler 12 is the steel sheet, spoiler 12 spreads all around the furnace.

The present invention is not limited to the above embodiments, and any technical solutions formed by equivalent substitutions fall within the scope of the present invention.